Axolotlia uses almost exclusively imported US school buses, but they're rare because Axolotlian kids can use the already existing public bus system in big cities. School buses are mostly seen in the rural areas.
They tried using something ridiculous for a moment in 2016, Electric Bi-Articulated Busses, (3 section bendy busses). They were so expensive and so over capacity that only 20 remain in use, all in Axoton where they rival the public transport enough to be useful.